Present day loudspeakers are relatively bulky, complex, and inflexible, consisting of a permanent magnet fixed to a voice coil and a cone. To meet the growing demand for smaller speakers for portable digital consumer electronics devices, manufacturers need new technology. Kaili Jiang, Shoushan Fan, and colleagues of researchers in China have mounted a thin CNT film onto two electrodes to form a simple loudspeaker to produce sound with the same excellent quality as conventional loudspeakers, but without magnets and moving components.. They also demonstrated that the flexible film could be used even to play music from an iPod. These CNT thin film loudspeakers are transparent, flexible, and stretchable, which can be tailored into many shapes and mounted on a variety of insulating surfaces, such as room walls, ceilings, pillars, windows , flags, and clothes without limitations. Furthermore, CNT thin films can also be made into small area devices, such as earphones and buzzers. There is no doubt that more and more applications will be developed as time goes on. This technique might open new applications of and approaches to manufacturing loudspeakers and other acoustic devices.